Concrete form



Dec. 9, 1952 1.. FONTAINE 2,620,542

} CONCRETE FORM Filed Oct. 17, 1949 2 SHEETS-SHEET 1 'Tfg. 1

his AT TORNE Y FONTAINE CONCRETE FORM Dec. 9, 1

2 SHEETS-SHEET 2 Filed Oct. 17, 1949 P 3 25 E;L 26

lNVENTOR LAMAR FON TA/NE m ATTORNEY Patented Dec. 9, 1952 PATENT OFFICECONCRETE "FORM La'mar sFcntainercDanville;---.Galif.,1: assignor-toFlexiform FCOhSh'llflfiOn Company-Inc Lafayette, lalif-.,,f acorporation (If-.CillifOl'Iiifl. A Applicatiohfictoberll, 1949;Se'r-ialNona-1,695-

41Glaims; (Cl. '25-.131)

' v '1'. 2: inventionzrelatesntdlconcretei former and om efdiheobjectsiof: my inventlon is the-provision 01cm easily tassembledzformvAnother obj ect is the proyisi'on of a concretefoimrthattmaybeeasilyldismantled and reassembled toreuse oni another job.

Stilliianother object'is the provisi'on of-a con cretefiform that'maybeadjusted inlen'gth Thezinyention hasother objects andfeatures'ofaadvantafge, :so'me of-Whi'ch' with the foregoing;

will be; explairferl =in the following descriptionofthat' form =o1i;he'=invention illustrated in the drawings. P; It is to ba -understoodthat theinvention is not liniited to :the embodiment shown by:

the? drawings; but may be -'included in a plurality of f oi'ms as=setforth' in' the claims.

Re'ferringato the drawings:

Figurei'l' ls a side elevation; and Figure 2 is'aplan view -ofthe-concrete form" of my invention;

portion'sbeirfgbroken awayto' redubethelength:

F igirre fi ls' a fragmentary sectional' viewon a l'ai ger scale takenin theplane indicated by the Broadly, my concrete formcomprises two,series ofi-vertlcal'panelsarranged spaced parallelisla'tioh -"-tdformthe boundary surfaces tbetween which=concrete "isto be" poured; Theabutting panels- :of each "series are heldini alinement" by spaced-bars*- extending longitudinally along the panels; the bars being heldadjacent the panels by suitable tension rods. The tension rods extendtransversely through the panels and across corresponding bars of eachseries of panels. Preferably the rods are located each adjacent theabutting edge of each panel, and are vertically spaced in-pairs. Anynumber of tension rods may be used but the minimum will be determined bythe height and thickness of the wall to be poured. Means are alsoprovided to prevent the two series of alined panels from collapsingtoward each other.

More specifically, my concrete form comprises two parallel series orprogressions of alined panel's :2;.;preferab1y .of' ,plyboardaandconveniente lyia; standard' i'x 8" injsize.

The panels of each series are arranged .verti-w cally; each ofthezpanels being positioneds'o that panel :in. the series.

The alinement of :each series: of ipanels ais maintained by=bars:3,preferably of: angle iron and extending longitudinally along: the.outerisidez of: For: convenience in handling,'.rthe2 bars :arepreferably about. twelve feet :longsand. are: vertically spaced .on: thepanels so".that.='the alined panel'sare properly supported against thethe panels.

pressure exertedby-the concrete.

The length of the wall to be poured will lot-ten determine the length:of bars'to be used and means :comprising. slots 2 4, a in qthevoutstandin flanges of the. angle barsxprovide adjustability-as. tolength when two or more short bars are tor be:

overlapped. The slots are preferably located .in the bars so that apairof slotsin each bar may be placed directly opposite'a pair of slots inthe overlapping bar.

of". the pin, the flange. l6 projecting underthe outstanding flange ofthe bar whichiliesagainsta thelpin, thusbinding the structure together.

The threaded end portion 13 of the piniengages aninternallythreadedbushing H fixed in the panel-.:* The bushing is formed"with an annular flange l8 on the inner end and provided with points forseating in the panel. Preferably the panel is countersunk so that asmooth surface is maintained on the inside of the panel. A washer I9 isretained on the other end of the bushing by a split spring ring 2|. Whendesired, the bushing may be removed from the panel simply by removingthe split ring 2| and giving the bushing a light tap.

Preferably, two pins are fixed to each panel, one pin being located atthe longitudinal midpoint of the panel at the top thereof; and thesecond pin correspondingly positioned but adja- Cap screws 6, .whichpass through the outstanding flanges ofthe bars. and through: spacers!interposed therebetween fix the overlappingbars together.

Means are provided .for fastening at least: two such; longitudinal.bars. :to' each :series: of? panels'; Saidu means ..comprise: pins 8,each pin: formedwith a sheadc=9 including. a base; flange 1|, and ashank I'Zi having a threaded end; portion ".1 3. A. flanged/rings.isdisposedon the shank portion 3 cent the lower edge of the panel. Thuseach series of panels is held in alinement while means are interposedbetween the two series to retain them in spaced parallel relation.

Said means comprise tension rods 22, extending transversely through.alined apertures located adjacent the abutting vertical edges of thepanels.

Each tension rod comprises two connected sections 23 and 24, eachsection being formed with a head 25 including a base flange 26, andhaving an annular groove 21 spaced therefrom. The section 23 of thetension rod tapers slightly, commencing beyond the groove andterminating in an externally threaded end portion 28. The section 24ends at a point corresponding to the point on the section 23 where thetaper begins; and has internal threads tapped therein adapted to engagethe threaded end portion 28. Each of the sections 23 and 24 is designedto receive a flanged ring 29 therearound in a manner similar to thatalready explained in connection 'with the pins 8.

To insure easy extraction of the rod from the concrete, the parts are soproportioned that the tapered portion of each rod lies wholly betweenthe inside boundary surfaces of the form; and the separate section 24and the section 23 extend from adjacent the inside surface of the head.

Means are provided for still further interlocking the bars and rods,comprising a plurality of bifurcated clips 32. Each clip is interposedbetween the bar and the panel, with the bifurcated end 33 engaging agroove 21 in the tension rod. With the bifurcated end of the clip thusengaged, the clip extends downwardly to a looped portion 34 adapted tofit about the downwardly extending flange of the bar. Thus the barsremain in fixed spacing on the rods and the various parts cooperatingwith each other form a readily assembled or disassembled structure.

I claim:

1. A concrete form comprising two series of alined panels to form theboundary surfaces of the wall to be poured in said form, a plurality ofrigid bars engaging the outer surface of each series of alined panelsand extending longitudinally therealong to retain them in alinement,tension rods extending transversely across one side of said bars,interlocking clips interposed directly between the bars and the rods,said clips also being interposed directly between the bars and panelsfor retaining the bars in fixed spacing on the rods and threaded pinssecured to each panel of each series and to the associated bars betweenadjacent rods and binding the clips in interposed position between thebars and panel.

2. A concrete form comprising two series of alined panels to form theboundary surfaces of 4 the wall to be poured. in said form, a pluralityof rigid bars engaging the outer surface of each series of alined panelsand extending longitudinally therealong to retain them in alinement,tension rods extending transversely across one side of said bars,interlocking clips interposed directly between the bars and the rods,said clips also being interposed directly between the bars and panelsfor retaining the bars in fixed spacing on the rods, threaded pinssecured to each panel of each series between adjacent rods, and aflangedring surrounding each pin and engaging each associated bar for bindingthe panel to the bar and binding the interlocking clips in interposedposition between the bar and panel. 3. A concrete form comprising twoseries of alined panels to form the boundary surfaces of the wall to bepoured in said form, a plurality of rigid angle bars extendinglongitudinally and associated directly adjacent each series of panels toretain them in alinement, tension rods comprising two connected sectionsand extending transversely across one side of said bars, each of saidrods having an annular groove therearound adjacent each associated bar,a clip engaging each groove and folded about the bar and positioneddirectly between the bars and panels for retaining the bar in fixedspacing on the rod, a pin in threaded engagement, with each panelbetween adjacent rods, and a flanged ring surrounding each pin and rodand engaging the associated bar for securing the panels of each seriesto the bars and binding the clips in intertioned face of the angle bar,and a ring surround-- ing the pin and having a flange engaging the anglebar.

LAMAR FONTAINE.

REFERENCES CITED The following references are of record in th file ofthis patent:

UNITED STATES PA'IENTS Number Name Date 1,626,897 Wedberg May 3,19272,164,592 Pilj July 4, 1939 2,222,339 Schenk Nov. 19, 1940. 2,270,448Juhl Jan. 20, 1942 2,358,975 Hillberg Sept. 26, 1944'v 2,401,263

McDonald May 28, 1946

